$buttonColor:#438de9 #ffb200#fb93b3 #866d2d  #4b2200;
.button{
    margin-top:23px;
    width:100%;
    height: 45px;
    padding-left:3px;
    float: none;
}
@for $i from 1 to 4{
.button input:nth-child(#{$i}){
    background-color:nth($buttonColor,$i);
    width: 199px;
    height: 46px;
    float: left;
    margin-right: 19px;
}
}
.button input:last-child{
    margin-right: 0;
}
